Sharma, Anuj Kumar ; Mukherjee, Rabindra Nath (2008) Synthesis and properties of (2-pyridyl)alkylamine- and (2-pyridyl)alkylamine-amide-coordinated copper(II) complexes: structures and non-covalent interactions Inorganica Chimica Acta, 361 (9-10). pp. 2768-2776. ISSN 0020-1693
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00201...
Related URL: http://dx.doi.org/10.1016/j.ica.2008.01.047
Abstract
Reaction of the ligand N-methyl-N-((6-pivaloylamido-2-pyridyl)methyl)-N-(2-pyridylethyl)amine (mpppa) with equimolar amounts of [Cu(H2O)6][ClO4]2 or CuCl2·2H2O in MeCN afforded mononuclear copper(II) complexes [Cu(mpppa)][ClO4]2 (1) and [Cu(mpppa)Cl2] (2). Crystal structure analysis reveals CuN3O (two pyridyl, an aliphatic amine, and an amide oxygen) coordination in 1 and CuN3Cl2 (two pyridyl, an aliphatic amine, and two chlorides) coordination in 2. Crystal packing diagram of 1 reveals that one of the perchlorate counteranions provides weak coordination to copper(II) centers and in turn the copper(II) centers assume pseudo-six-coordination, generating 1D chain. Notably, one of the copper(II)-coordinated chloride ions in 2 participates in an intramolecular N-H···Cl interaction. Intermolecular C-H···Cl interactions in the solid state generate helical structure. Spectroscopic (IR, UV-Vis, and EPR) and redox properties of the two complexes have been investigated and compared.
Item Type: | Article |
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Source: | Copyright of this article belongs to Elsevier Science. |
Keywords: | Copper; (2-pyridyl)alkylamine-amide Ligand; Crystal Structures; C-H/N-H···Cl Interactions; Absorption and EPR Spectra; Redox Properties |
ID Code: | 25993 |
Deposited On: | 04 Dec 2010 10:43 |
Last Modified: | 02 Mar 2011 10:20 |
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